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   Mineral names and rock pictures are hot; click to enlarge   
   pdf version for printing.   
   Cross section of the earth showing the distribution of igneous rocks   
Mineral Percent Abundance Chart
     The table at the top of the page is read vertically, from zero% at the bottom to 100% at the top (scale on left and right sides). For example, the composition of the rock on the farthest right side of the chart is (bottom up) about 92% olivine, and the remaining composition to the top about 8% pyroxene.

Last Update: 7/20/00

e-mail: (Fichtels@jmu.edu)